Welding device for locking rail

Abstract

The invention discloses a welding device for a locking rail. The welding device is used for welding the locking rail to a steel rail. The locking rail comprises a first rail waist, a first rail top and a first rail bottom. The steel rail comprises a second rail waist, a second rail top and a second rail bottom. The device comprises a static clamp, a dynamic clamp, a pair of first conductive electrodes, a pair of second conductive electrodes and a welding power source, wherein the clamping end of the static clamp is clamped to the second rail waist portion of the steel rail, the clamping end of the dynamic clamp is clamped to the first rail waist portion of the locking rail, the first conductive electrodes are arranged at the clamping end of the static clamp and correspondingly located on the two sides of the second rail waist, and the second conductive electrodes are arranged at the clamping end of the dynamic clamp and correspondingly located on the two sides of the first rail waist; and the positive pole and the negative pole of the welding power source are correspondingly connected with a first clamping electrode and a second clamping electrode, and the welding power source is a medium-frequency inverter direct-current power source. According to the welding device, the medium-frequency inverter direct-current power source is adopted, the required welding current is accumulated instantly, and the heat accumulation speed is far higher than the current shunt speed.

Description

technical field [0001] The invention relates to the field of locking rail welding, in particular to a welding device for locking rails. Background technique [0002] At present, the welding of domestic high-speed railway tracks mostly uses two types of three-phase secondary rectifier welding machine and AC welding machine. The welding defects of the two kinds of equipment are unstable quality and complicated control. As a result, in the process quality strength assessment (drop weight test) organized by the Railway Corporation every year, there are often rail breakages, and there are no rules to follow. [0003] At present, the welding of the final locking rail in the industry still uses the old technology decades ago. In order to prevent the possible diversion of the wheels passing through the rails and directly affect the welding quality, it is necessary to lift the engineering vehicle on the track to an insulated state. Contents of the invention [0004] The object of...

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